1/5X+(1/5X-20)+500=X
问题描述:
1/5X+(1/5X-20)+500=X
解方程,算出X
答
1/5X+(1/5X-20)+500=X 2/5 * x + 480 = x 480 = x - 2/5 * x 480 = 3/5 * x x = 480 * 5/3 = 800
1/5X+(1/5X-20)+500=X
解方程,算出X
1/5X+(1/5X-20)+500=X 2/5 * x + 480 = x 480 = x - 2/5 * x 480 = 3/5 * x x = 480 * 5/3 = 800